import base64
from odoo import models, api
import subprocess
import tempfile
import os
import logging
_logger = logging.getLogger(__name__)



class AttachmentConverter(models.AbstractModel):
    _name = 'ir.attachment.converter'
    _description = 'Attachment Converter'

    @api.model
    def convert_to_pdf(self, attachment):
        if attachment._get_preview_type() != 'office':
            return False

        with tempfile.NamedTemporaryFile(suffix='.docx', delete=False) as doc_file:
            doc_file.write(base64.b64decode(attachment.datas))
            doc_path = doc_file.name

        pdf_path = doc_path + '.pdf'

        try:
            # Using LibreOffice for conversion
            subprocess.run([
                'libreoffice', '--headless', '--convert-to', 'pdf',
                '--outdir', os.path.dirname(doc_path), doc_path
            ], check=True)

            with open(pdf_path, 'rb') as pdf_file:
                return pdf_file.read()
        except Exception as e:
            _logger.error(f"Conversion failed: {e}")
            return False
        finally:
            # Clean up temp files
            if os.path.exists(doc_path):
                os.unlink(doc_path)
            if os.path.exists(pdf_path):
                os.unlink(pdf_path)